FLINT, MI -- A 45-year-old Howell man is facing federal gun and drug charges in Flint after authorities discovered illegal marijuana plants while investigating the death of his girlfriend in 2011.

Police were dispatched to the couple's home Sept. 9, 2011, after the man's girlfriend was found unresponsive in bed. Authorities discovered 69 marijuana plants, multiple guns and more than 8,000 rounds of ammunition during their investigation, according to a complaint unsealed in Flint U.S. District Court April 24.

The suspect has not been indicted or arraigned on any charges.

An affidavit filed with the complaint shows that the suspect has a 1993 conviction of possession of a short-barrel shotgun and a 1999 conviction of being a felon in possession of a firearm.